01:460:100 Lecture 14:

• School: Rutgers University
• Department: Geological Sciences
• Course: 01:460:100
• Professor: Mark Feigenson

Document Summary

Chapter 15 - riches in rock: mineral resources. Gold, silver, copper, lead, zinc, iron, aluminum. Sand and gravel, gypsum, halite, dimension stone. Reserves - discovered, surveyed, and economically recoverable. Native metals metals are found in nature: cu, au, ag. Metallic: outer shells of atoms move easily from one to another. Economic deposits require concentration by geologic processes. Native metals liberated from rock by heating it: smelting. Metal runs off and leaves behind a non-metallic residue: slag. Iron is liberated as follows: fe2o3 + 3co 2fe + 3co2. Smelting is a process that releases metals from ore minerals. Different minerals require different smelting techniques at different temperatures. Ore: deposit that can be mined economically. Ore is mined that contains native metals or a concentrated accumulation of ore factors. The concentration determines the grade of the deposit. minerals. Uneconomic minerals found with native metals/ore minerals is called gangue.